Share why you are looking forward to reading Our Great Big Backyard, your favorite thing about our national parks, or why you love the outdoors using #tweetsfortrees. For every tweet and retweet between today, Earth Day, and April 29, Arbor Day, HarperCollins will work with the National Park Service to plant a tree
in parks that need them.*
Preorder your copy of the book here!
To learn more about the National Park Service, click here!